Art of making bilged barrel-bodies.



w.- H; DECKER. ART OF MAKING BILGED 'BABBEL BODIES.

APPLICATION PIJQBD MAB. 6, 1908.

957,457 Patented May 10, 1910.

2 BHBETB-SKBET 1.

I I I W. H. DECKER. ART OF MAKING BILGED BARREL BODIES.

APPLIOATION FILED MAR. 5, 1908.

Patented May 10, 1910.

SEIIEBTB-BHEET 2.

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sTAEs WILLIAM H. DECKER, 0F SYRACUSE, NEW YORK, ASSIGIN'OR TO THE SOLVAY PROCESS COMRANY, OF SYRACUSE, NEW YORK, A CORPORATION NEW YORK.

ART OEMAKING BILGED BARREL-BODIES.

Patented May 10, 1910.

Original application "filed February 5, 1907, Serial No. 355,844. Divided and thisapplieation filed March 5.,

1908. Serial In. 419,291.

To all whom it may concern:

Be it known that I, WILLIAM H. DECKER, a citizen of the United States, residing in the city of Syracure, county of Onondaga, and State of New York, have invented certain new and useful Improvements in the Art of Making Bilged Barrel-Bodies, 'of which the following is a specification.

My invention relates generally to the production of bilged barrel bodies, and more particularly to the making'of such a barrel body made from paper pul Heretofore barrel bodies have been made rom such pulp in the form of a cylinder, by winding the same upon a cylindrical mandrel. Such barrels, however, are so, inconvenient to handle on account of their shape, that their use is impracticable, except in very small sizes. Bilged barrel bodies have also been made from pul by compressing the pulp in a mold of the'dbsired shape. Barrel bodies made in this way are, however, weak, because of the lack of cohesion between the fibers, and forthis reason they are unes'irable as containers of heavy contents.

The object of my improvementsis to obviate these objections, and rovide a barrel body which, while having t e lightness incident to pulp as a material and the convenience of the bilged shape, shall at the same time .be strong enough for any purpose for which barrels are ordinarily em loyed. Such a barrel body I produce in the ollow- -ing mannerzIn the firstinstance I lift the ulp, of which the barrel body is to be ormed, from a mass of such material, in. a thin sheet or web having the same bilge or convexity as thebarrel body which is to be formed therefrom and I so treat this web in the subsequent steps of the process that it retains at all times the same shape and the same relative proportions in its several parts, until it is finall deposited in superposed layers to form t e barrel body.- Thus the structural weakness which would result from and distortion incident to a After the web is lifted from the mass of pulp it is kept under tension either by rest- 111% it on a suitably sha edrigid surface, or su jecting' it to an air last, or both, or,in any other suitable manner, w ereby its bilged shape is maintained, and t e formation of wrinkles is prevented, until it is finally deposited in the barrel shell. It is also brought into such a position, being reversed when originally 1i ted with the convex side outward, that, when it reaches. the bilged mandrel upon which it is eventually wound, it shall present thereto a. concave surface, and in this position it is moved along until it reaches the point at which 1t begins to take its final shape. This ,for- Ward movement of" the web is effected in such a manner that every point in the cross section thereof rogresses at asubstantially uniform rate 0 speed from the time it is lifted from the mass of pulp until it is edges, each portion maintains its originat rate of speed and, by reason of the starting of the web of pulp in the bilged form, the

pulp is'fed to the 'Web in such manner as to meet the speed-requirements of each part. By the application of theweb to the mandrel upon which the barrel body is to be formed its position is again reversed so thatit resen'ts the same convex surface as when rst removed from the mass of pul and it is taken up by and wound upon tie mandrel in successive superposed layers of equal thickness until the barrel body is completed. The pulp is preferably subjected to pressure while being wound upon the mandrel, so that the successive layers are pressed closely together and compacted. p

In the drawings filed herewith and forming a part hereof, I have indicated a form of apparatus suitable for carrying this process into efiect, although'any suitable means.

may be employed for this purpose.

Figure I of the drawings is an end view of the apparatus; Fig; 2 is a rear elevatmn, partly in section, with an indication of a part ofthe sheet'of pulp bein carried to and upon the forming mandre Fig. 3 IS a side view, and Fig. 4 an .end view of a completed barrel body, partly broken away the bilge m the mass rotated by any suitable means, as the gears,

b, 6 After the bilged shaped web has been lifted by and taken its shape-upon the roll, B, it is transferred to a roll, H, the surface of which presents a concavity corresponding to the convexity of the roll, B. The rolls,

. B andH, are placed as close together as may be Without coming into actual contact. By this transfer to the roll, H, the web is reversed in position so that it presents exteriorly a concave surface and is kept under the same tension and therefore in the same shape as when upon the roll, B. The slight slackening in the tension of the web which would theoretically take place while it is passing across the small spacebetween'the rolls B and H may be disregarded, and in any event is prevented by the action of the airblast hereinafter referred to. The transfer of the web may be conveniently effected by applying to the inner surface of the web anair blast by any suitable means, as by a blast from an air blower of any usual construction through a main air pipe, Gr,'and

thence through a' row 'of pipes, g, located along the desired line of transfer, and having their openings close to the inner surface of the perforated roll, B, by which means the web is blown over, at the proper point, from the roll, B, to the roll, H. In order to enable the web of pulp to be thus transferred without breaking, a portion of the watery content of 'the web is extracted, whereby it is compacted and strengthened. This may be done by means of air pressure applied thereto through the action of the suction box, 0, located. within the roll, B, and connected with an air exhaust apparatus. The uniform rate of movement of the web I effect by making up the transfer roll, H, of a series-of independent disks or sections, h, M, h", &c., rotatably' mounted on a fixed shaft, I, shown in section in Fig. 2. These disks maybe rotated by contact therewith of a bilge 'or breaking of the web will occur when it is transferred tothe mandrel to be wound thereon. When the web has been moved to the polnt where the transfer roll, H, is in" contact with the mandrel, M, it is transferred to the mandrel and continues to be wound thereon until a barrel-body of the desired thickness is formed, when it is removed from the mandrel. While the barrel body is being formed upon the mandrel I apply pressure thereto, so as to aggregate and consolidate the successive layers, and

this pressure may be-applied by means of the weight of the mandrel itself. The shaft of the mandrel rests inopen bearings, m, m, in which it is free to rise so that space is afforded between the mandrel and the roll, H, for the increasing thickness of the barrel body as successive layers of pulp are deposited thereon, and at the ame time it is compressed between the re 1, H, and the mandrel by the weight of the mandrel thereon. I do not, however, limit my process to the use of the hereinbefore described appa-- having the lightness and cheapness incident 7 to material of which it is composed.

- I do not claim herein the apparatusabove described, as I have made the same the subject of a separate application for Letters Patent, Serial No. 355,844, filed Feb. 5th, 1907, of which this application is a division.

What I claim as new and desire to secure by Letters Patent is; 1. ,The improvement in the art of forming bilged barrel bodies, which consists in lifting a bilge shaped web of paper'pulp from a.

mass thereof, reversing the position of such web so that it shall present exteriorly a concave surface, moving the web forward in this position at uniform-speed in each part thereof, the speed being greatest in the central parts, and decreasin therefrom to the edges of the web, and fina y again reversing the position of the web and windin it in superposed layers until the desired thlckness is attained.

2. The im rovement in the art of forming bilged'barre bodies, which consistsinlifting a bilge shaped web of paper pulp from a mass thereof, reversing the position of such web, so that it shall present exteriorly a concave surface, moving the web forward in this position, and final y again reversing the position of the web and winding it'in superposed layers until the desired thickness is attained. g

3. 'I-he hereinbefore described improvement in the art of forming bilged barrel bodies which consists in lifting from a mass of paper pulp a web of pulp having the same bilge whlch it is desired the completed barrel body shall have, moving such web forward in such manner that it shall retain at all points of its progress its original bilged shape and finally depositing it in successive superposed layers to form the barrel body.

4.. The hereinbefore described improvement in the art of making bilged barrel bodies which consists in lifting from a mass of paper pulp a web of pulp having the same bilge which it-is desired the completed barrel body shall have, partially extracting the water from such web, moving such web forward from the point of its formation in such manner that it shall retain at all points of its progress its original bilged shape and finally depositing it in successive superposed layers to form a barrel body.

5. The hereinbefore described improvement in the art of "making bilged barrel bodies which consists in lifting from a mass of paper pulp a web of ulp having the same bilge which it is desired the completed barrel body shall have, moving said web forward under tension whereby its bilged shape is maintained, and at a uniform rate of s eed in each part thereof, and finally depositing it in successive layers to form a barrel body.

6. The process of making bilged barrel bodies which consists in formin a bilgeshaped web of paper pulp, depositing such web u on a concave surface, and removing the we from such surface to and winding it upon a bilged mandrel,

7. The process of making bilged barrel bodies which consists in forming a bil eshaped web of paper pulp, continuously depositing such web upon a concave surface, and continuously transferring the web from such surface to and winding it upon a bilged mandrel.

8. The processof forming vessel bodies having curved sides, which consists in forming a web of paper pulp having the same curve as the side of the article to be formed, depositing such web upon a concave surface having the same curve as the web, and, finally, transferring the web from'such surface to and winding it upon amandrel having the shape of the body to be formed.

.9. The hereinbefore described improvement in the art ofmaking 'bilged barrel bodies, which consists in forming a web of paper pulp having the same bilge which it is desired the completed barrel body shall have, strengthening and compacting the web by partially extracting the water therefrom, bringing the web into such a position that the concave side thereof can be brought into contact with a bilged mandrel, and finally, applying the web to, and winding it upon a bilged mandrel, in successive superposed layers, and under pressure, until the barrel body is formed.

In testimony whereof, I have hereunto subscribed my name, this 27th day of February A. D. 1908.

WILLIAM H. DECKER. 

